Rayhoo 6pcs Set G4 2W COB LED Light Lamps AC/DC 12V Non-dimmable Equivalent to 15W T3 Halogen Track Bulb Replacement LED Bulbs Warm White 3000K Save electricity bill: Replace 15W halogen bulb by 3W LED, save 85% on electricity bill of lighting 3Light angle: 360 Directional; COB LEDs,AC DC 12V (10V-20V); Non-dimmable. NOTE: Please kindly note that this G4 LED bulb is Non-dimmable, please don't use them with dimmer switch, as the dimmer may cause the lights flicker or noise Easy Installation:Standard G4 base,can be easily fitted instead of ordinary halogen bulbs. Reduce re-lamp frequency:Lifespan is over 20000 hrs,save effort and maintenance costs on changing bulbs frequently. Eco-Friendly:No lead or mercury; No UV or IR Radiation. All of our light bulb has one year warranty, if the bulb has any problem, please contact Rayhoo, and we will help to solve all your problem.